V4L/DVB (6660): Allow fully configuring xc3028 during xc2028_attach

xc3028 can be used on some DTV only designs (for example, DVB-S boards). Before
this patch, a DTV only board would need to call set_tuner_config callback.

This patch allows to optionally pass a xc3028_ctrl parameter, via xc3028_config
struct, fully initializing the driver for DTV.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 5 insertions, 1 deletions

diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
index 6a6642ea48ce..c231e7a74ffb 100644
--- a/drivers/media/video/tuner-xc2028.c
+++ b/drivers/media/video/tuner-xc2028.c
@@ -1061,7 +1061,7 @@ void *xc2028_attach(struct dvb_frontend *fe, struct xc2028_config *cfg)
         if (debug)
                 printk(KERN_DEBUG PREFIX ": Xcv2028/3028 init called!\n");
 
-        if (NULL == cfg->video_dev)
+        if (NULL == cfg || NULL == cfg->video_dev)
                 return NULL;
 
         if (!fe) {
@@ -1106,6 +1106,9 @@ void *xc2028_attach(struct dvb_frontend *fe, struct xc2028_config *cfg)
 
         tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
 
+        if (cfg->ctrl)
+                xc2028_set_config(fe, cfg->ctrl);
+
         mutex_unlock(&xc2028_list_mutex);
 
         return fe;
diff --git a/drivers/media/video/tuner-xc2028.h b/drivers/media/video/tuner-xc2028.h
index f24fb2a00f6f..a59d00fb2a36 100644
--- a/drivers/media/video/tuner-xc2028.h
+++ b/drivers/media/video/tuner-xc2028.h
@@ -23,6 +23,7 @@ struct xc2028_config {
         struct i2c_adapter *i2c_adap;
         u8                 i2c_addr;
         void               *video_dev;
+        struct xc2028_ctrl *ctrl;
         int                (*callback) (void *dev, int command, int arg);
 };